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Cook off liquid from your favorite soups, sauces, or broths in minutes
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You’re playing around in the kitchen with a new recipe when the recipe says, “Reduce the sauce.” Huh? What does that mean? In cooking, reducing is the process of thickening ingredients to create a sauce or syrup (also known as a reduction). This process is easier than you think and can be done by even an amateur cook! Keep reading to learn how to make a reduction (and bring your sauce, gravy, or syrup to the next level).

How do you reduce a sauce?

To reduce a sauce or syrup, bring your broth, soup, or wine to a boil in a wide, uncovered pan or pot. Once boiling, lower the heat to a simmer and stir occasionally. Continue simmering until the liquid reaches your desired consistency.

Method 1
Method 1 of 3:

Reducing Liquid Ingredients

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  1. Some reductions require only one ingredient. Nape, for instance, is a reduction of red wine. Other reductions like gravy will require multiple ingredients such as salt, spices, flour, and milk or water. [1]
    • There’s no right way to decide what ingredients to reduce. You can reduce any liquid you want in cooking.
    • Anything with a high moisture content can be reduced, including soups, alcohol, and dairy beverages. [2]
  2. If you want 2 cups (473 milliliters) of sauce, there’s no need to start with 2 litres (0.53 US gal) of liquid. Generally, you can start your reduction with about 1.5 to 2 times your desired volume of liquid.
    • For instance, if you want 2 cups (473 milliliters) of a particular sauce, start your reduction with 3 or 4 cups (709 to 946 milliliters) of liquid.
    • The precise amount of liquid you’ll need to reduce to achieve a sauce with the consistency you wish depends on the contents of the liquid you reduce and the conditions under which you reduce it.
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  3. Heat the ingredient(s) until it reaches a boil, and then turn down the heat to a simmer. [3] If you continue to boil your ingredients, it might burn or stick to the sides of the pan. Excess heat might also cause the sauce to reduce too quickly or leave it with a bitter taste.
  4. The purpose of a reduction is to allow excess liquid to evaporate. If you cover the pan, evaporation isn’t possible. So, keep the pan or pot uncovered until the reduction is complete. [4]
    • Place the lid to the side of the pan so that you’ll be prepared to cover the reduction when it reaches your desired consistency.
    Samin Nosrat, Chef, TV Host, and James Beard Award–winning Author

    Reducing a sauce or liquid is a simple yet powerful technique to intensify flavor. As water evaporates away, flavors concentrate, and ingredients meld together. For the best results, use a wide, shallow pan to allow for rapid evaporation. Bring the liquid to a simmer over medium heat and cook uncovered, regularly skimming away fat or foam.

  5. Some reductions take a long time and won’t need a lot of attention while they bubble away. Others, however, reduce quite quickly. If you’re reducing less than 1 cup (236 milliliters) of liquid, stand by and keep an eye on it as it reduces. [5]
    • The precise amount of time necessary to achieve a reduction with your desired consistency depends on the type of liquid you’re reducing, the volume of liquid you begin with, and the conditions under which you cook it. Most reductions require 15-30 minutes.
    • If you’re working from a recipe, the recipe will likely estimate how much time the reduction requires.
  6. As your reduction evaporates, it will leave behind a residue line that marks how much liquid was in the pan before you began reducing it. To easily figure out how much the liquid has reduced, subtract the current elevation of the liquid from the level it was at when you began the reduction. [6]
    • If your recipe tells you to reduce by 1/4, for instance, reduce the liquid until the final volume of your sauce or cooking liquid is at 3/4 the depth it was when you began.
    • If you wish to track your reduction more accurately, pour it into a large measuring cup periodically to determine how much it has reduced, then return it to the pan if you wish to continue reducing it.
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Method 2
Method 2 of 3:

Speeding Up Your Reduction

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  1. Watermark wikiHow to Reduce in Cooking
    Meat chunks and slices can lengthen the time of sauce reduction, so it’s best to remove them (especially if you’re in a hurry). [7] If you’re working with a braise, remove meat pieces to another pan or a plate when they’re done cooking, then add them back into your reduction when it has reached the consistency you desire.
  2. Watermark wikiHow to Reduce in Cooking
    A larger surface area allows your sauce to reduce more quickly. [8] A wide sauté pan or a Dutch oven are your best options. You can reduce using a small sauce pot, but it will take longer.
  3. Watermark wikiHow to Reduce in Cooking
    If you’re short on time (or just really hungry), place half of your sauce into a second pan and cook both pans simultaneously. Cook both pans under identical heat settings. This will lessen the amount of sauce per pan you’ll have to reduce.
    • Combine both pans when they reach the desired consistency.
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Method 3
Method 3 of 3:

More Tips for a Perfect Reduction

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  1. Watermark wikiHow to Reduce in Cooking
    Butter will thicken the reduction and give it a pleasing appearance. Do not add the butter until the reduction is finished, as adding it too soon can cause the reduction to separate.
  2. Watermark wikiHow to Reduce in Cooking
    If you’re making a sauce, braise, or other reduction that requires alcohol, always reduce the alcohol separately, then combine it with the other ingredients later. If you don’t, you’ll end up with a more boozy flavor than you would otherwise. [9]
    • Reducing wine will cut down on its overall acidity.
  3. Watermark wikiHow to Reduce in Cooking
    Canned tomatoes have already been processed with heat, so if you’re trying to reduce a sauce with canned tomatoes, there’s no need to bring them to a boil beforehand. If you’re using fresh tomatoes, on the other hand, heat them rapidly at the start of the reduction, then reduce heat to a simmer to bring out the best flavor. [10]
  4. Watermark wikiHow to Reduce in Cooking
    Some people like their sauces chunky, with bits of tomato or other vegetable solids in them. If you prefer a smoother sauce, pour the sauce through a mesh strainer after it reaches your desired consistency.
  5. Watermark wikiHow to Reduce in Cooking
    Sprinkling some potato starch, cornstarch, arrowroot, or flour into your reduction can help it thicken up. Place a few spoonfuls of your chosen thickener in a sieve and sprinkle it in a light layer over your reduction. Mix it in using a mixing spoon and add more if necessary.
    • Don’t add too much thickener at once, or your reduction may turn chunky.
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Community Q&A

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  • Question
    What do I do if my consistency is not reducing to a syrup?
    Community Answer
    If there is only a small amount of liquid left (around half an inch), turn the heat down. It will take a bit longer but it will require less maintenance and is less likely to burn. Also, if your sauce doesn't contain enough fat or sugar, it might take a long time to reduce.
  • Question
    My consistency is not reducing and it has been on the heat for an hour. What can I do?
    Community Answer
    Try using cornflour. Put one or two teaspoons of cornflour into a normal glass (more if you are cooking a very large amount) and add about four finger widths of water. Mix together briefly and add to your dish. I find it helps to add it in small amount first and stir between additions, just in case it ends up being too thick.
  • Question
    How do I correctly calculate reductions for a sauce?
    Community Answer
    This depends on which liquids are being used as the velocity changes for each liquid.
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      Tips

      • If your reduction does not have sugar, it is known as a sauce. If it does have sugar, it is known as a syrup.
      • Whisk the reduction when finished to give it a shiny appearance.
      • Deglazing also involves reducing, but you will reduce less liquid from the mixture through a slower cooking process.
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      About This Article

      Article Summary X

      To reduce in cooking, start by boiling your liquid in an uncovered pan and reducing the heat to a simmer. As it simmers, monitor the liquid closely until it reaches the consistency you desire. If you’re having trouble getting your liquid to reduce, sprinkle in a few spoonfuls of a thickener, like cornstarch or flour. However, make sure to place your thickener in a sieve and sprinkle it in gradually to avoid chunks of cornstarch or flour in your reduction. After the reduction is finished, add 1-2 tablespoons of butter to thicken it and give it a pleasing appearance. For more tips, like how to track the amount you’ve reduced, read on!

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        Sep 11, 2018

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